Create projection builder API

[alechenninger]

// single, simple projection
var allFields = include("*").recursively();

// include all except some
// multiple projections use array
var exceptSome = [
  include("*").recursively(),
  exclude("some")
];

// array projection
var jsonExampleFromDocs =  [ { "field": "address", "include": true,
     "match": { "city": "Raleigh" }, "project": { "streetaddress": true} } ]

var streetAddressesInRaleigh = include("address")
    .where(field(city).equalTo("Raleigh"))
    .project(include("streetaddress"));

// alternates:
include("streetaddress").in("address").where(field("city").equalTo("Raleigh"));
in("address").where(field("city").equalTo("Raleigh")).include("streetaddress");

Main question is what does it mean in array projection to "include": false?